﻿/*******************************************************************************************
 * Copyright (c) 2006-2009 Alex Robson, Rob Simmons, Craig Israel, and Rachel Twyford
 *
 * Use of this software in any form requires that you have both 
 * read and agreed to the following terms:
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions: 
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution.
 * Neither the name of Nvigorate nor the names of its contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************************/

using System;
using System.Collections;
using System.Collections.Generic;
using Nvigorate.Common.Reflection;

namespace Nvigorate.Relational.Record
{
    public class InstanceRecordCollection : RecordCollectionBase
    {
        private Type _targetType = null;
        private IList _collection = null;

        public override IRecord CreateRecord()
        {
            if (_targetType == null)
                throw new Exception("Can't create record in unitialized InstanceRecordCollection.");
            object instance = Activator.CreateInstance(_targetType);
            InstanceRecord record = new InstanceRecord(instance);
            _recordList.Add(record);
            if (_collection != null)
                _collection.Add(instance);
            return record;
        }

        public override string Name
        {
            get
            {
                return _targetType.FullName;
            }
        }

        public InstanceRecordCollection()
        {
        }

        public InstanceRecordCollection(IList collection)
        {
            _collection = collection;
            if (collection.Count > 0)
            {
                _targetType = collection[0].GetType();

                foreach (object instance in collection)
                {
                    _recordList.Add(new InstanceRecord(instance));
                }
            }
            else
            {
                Type listType = collection.GetType();
                if(listType.IsGenericType)
                {
                    _targetType = listType.GetGenericArguments()[0];
                }
            }
        }

        public InstanceRecordCollection(Type instanceType)
        {
            _targetType = instanceType;
            _collection = (IList) Reflector.MakeGenericInstance(typeof (List<>), instanceType);
        }
        
    }
}